Cutlery



H. J. ZINN.

CUTLERY.

APPLlI-ATION FILED SEPT.9. 1920.

1 $14,997, 4 Patented May 2, 1922.

WITNESSES INVENTU/i lidZ/NN By MW ATTORNEYS SEATEEfi TNT QFFHQE.

CUTLERY.

Specification of Letters Patent.

Patented May 2, 1922.

Application filed September 9, 1920. Serial No. 409,139.

To all whom it may concern:

Be it known that I, HENRY J. ZINN, a citizen of the United States, and a resident of Kingston, in the county of Luzerne and State of Pennsylvania, have invented new and Improved Cutlery, of which the following is a full, clear, and exact description.

This invention relates to improvements in cutlery, and more particularly to knives, an object of the invention being to provide an improved construction of blade of relatively thin, hard steel having an integral stiffening rib at the rear edge thereof and provided with metal or other material at the sides of the blade softer than the blade itself.

A further object is to provide a blade having a central cutting portion relatively thin, and to the sides of which softer metals are fixed, so that the cutting portion of the blade can be easily sharpened by rubbing the same against any stone or other sharpening medium which causes the removal of the softer metal exposing the hard metal cutting edge.

WVith these and other objects in view the invention consists in certain novel features of construction, and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings Figure l is a view in side elevation illustrating my invention as applied to a knife.

Figure 2 is an enlarged view in transverse section on the line 22 of Figure 1.

Figure 3 is a view in longitudinal section through the blade and handle taken on the line 33 of Figure 1.

Figure 4 is a view in transverse section on the line 4-4 of Figure 1.

Referring particularly to Figures 1 and 2, 1 represents a relatively thin steel blade having an integral strengthening head or web 2 at its rear or back edge, the latter projecting transversely to both sides of the blade 1, and 3, 3, represent thicknesses of softer metal which constitute the side faces of the blade and which may be rigidly fixed to the blade by any process, so that the several parts of the blade will constitute, in effect, a single cutting member.

The blade 1 and its shank portion 4 are made lntegraland are preferably of the same width with the strengthening rib or web 2 I extending throughout the edge of the shank,

and being of softer metal than the blade are I worn away in advance of the blade so that the sharp cutting edge of the blade can be easily maintained and kept sharp by contact with any ordinary sharpening device.

By reason of this construction I can not only cheapen the cost of manufacture of the blade, but can produce a better knife than heretofore, and I do not wish to limit myself to any particular manner of forming the blade but desire to cover broadly the idea as expressed.

Various slight changes might be made in the general form and arrangement of parts described without departing from the invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claim.

I claim:

As a new article of manufacture, a cutting blade comprising a relatively thin intermediate portion, an integral strengthening web or bead at one edge of said relatively thin portion, said relatively thin portion having a shank extension at one end, said web ex tending along the edge of the shank, handle members on the shank below the web at the edge of the web, and side portions on the blade of softer metal than the intermediate portion, secured to the intermediate portion and to the web, said side portions flush with the outer edges of the web and tapering toward the edge of the blade.

HENRY JOHN ZINN. 

